First reports came in at around 9:50am (EST) on May 23rd at both forums. Massive panic actually started where we saw dozens of forum posts with members not understanding how Google can completely wipe off many (not all) .info TLDs and all Blogspot results. Here is one person's reaction:

But banning all .info domains without any apparent reason is greatly surprising.

But most felt this was a pretty large Google bug and they were right.

About five hours later, Webmasters began to see the old results come back to life. At 2:49pm (EST), we got reports from WebmasterWorld that the info TLDs were coming back into the Google results. Then at 4:33pm (EST), we received similar reports from DigitalPoint Forums.

Imagine that, Google delisting most of the .info TLDs and blogspot hosted blogs.